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![Ask an Astrobiologist](https://webarchive.library.unt.edu/eot2008/20090813174113im_/http://astrobiology.nasa.gov/img/text/ask-an-astrobiologist.gif)
"What is a ‘sulfur-based’ organism? Did I step in a pile of science fiction? Please clean up my brain on this one."
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NOVA ScienceNOW - Hunt for Alien Earths
NOVA’s ScienceNOW series, hosted by Neil de Grasse Tyson, has just released a new episode called Hunt for Alien Earths which is devoted to the work of astronomers who search for planets orbiting other stars that might host life. Astrobiologists Lisa Kaltenegger, David Charbonneau, and Geoff Marcy are featured in this beautifully produced, twelve minute video.
![Recent Articles](https://webarchive.library.unt.edu/eot2008/20090813174113im_/http://astrobiology.nasa.gov/img/text/hd_recent_mb.gif)
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